I had some drama this year with my multistrada misfiring badly and it was caused by fitment of the new cambelts being one tooth out on vertical cyl intake. It would cough and buck on anything more than 1/3rd throttle up to 4k rpm and then was fine above that. Also when cold it would stall at startup after a few secs and after about 4 restarts would then idle normally. Anyway, refitting the cambelt fixed that for about 1000 km. Until this morning, I washed the bike, got geared up, it started and idled perfectly but then went back to the misfire under moderate, and upward, throttle. But it was ok from 4-6.2k rpm where it pulled like a train but then bogged down and would not rev any higher than 6200rpm. I was hopeful it was the exhaust flap but it looks to be cycling properly. Also as an experiment, I changed from touring to sport mode and back a couple of times. In sport mode the check engine light comes on and stays on, as well as still having the misfiring. In ordinary back road riding you would almost not notice until you give it a handfull, ie when overtaking or rev up over 6200rpm. Very frustrating after all the hassle I have had already this year with this bike. Am going over everything to see if I have upset anything during the washing process... Anyway, hoping once again to find a solution, so welcoming feedback...thanks in advance...Al
Sounds very much like the exhaust flap to me. You really haven't had much luck with this bike, (glad you found the source of the original issue though)
Exhaust flap is cycling fine, I lubed it anyhow but also disconnected the battery so I can leave it disconnected for 24 hrs. Was hopeful that if it had been water in somewhere that it might have dried during riding but that did not happen...seems odd also that the engine management light comes on only in sport mode. I guess that means at least it can prob be diagnosed on a ducati system, if I can get near one...
I had a similar issue regarding only coming on in certain modes. But it was DSS light in sport, ok in touring. Bike ran fine but suspension rock hard. Sorted itself out thankfully. But not long after, I had another engine light that turned out to be rear wheel sensor, and dealer thought it was all linked.
So, after checking and cleaning evrything with CRC66 I could get to without pulling off the fuel tank, the lamda sensor plugs, all four coils where they have a three wire connection plug, plug leads and plugs to horizontal cyl, side stand plug, cam sensor plugs, temp sensor and plug plus any other general loom plugs I could access. I went for a test ride in the rain to see if it was still the same. The low rpm stumble is still there but lower in the rev range and the high rpm restriction has gone. So, will wait to get a good ride in this weekend and re-assess. But the engine warning light is still solid in sport mode. Hmmmm.....
Possible but unlikely, I had run more than half a tank thru with no issues then it sat for two weeks before it developed it's current state...but am tempted to put a bottle of injector cleaner in there next top up...
